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<font size="4">SimpleListener.java</font>
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<FONT ID="LN">1 </FONT><A NAME="1"></A><FONT ID="SingleLineComment">// Copyright (c) 2000 Just Objects B.V. &lt;just@justobjects.nl&gt;
<FONT ID="LN">2 </FONT><A NAME="2"></A></FONT><FONT ID="SingleLineComment">// Distributable under LGPL license. See terms of license at gnu.org.
<FONT ID="LN">3 </FONT><A NAME="3"></A></FONT>
<FONT ID="LN">4 </FONT><A NAME="4"></A><FONT ID="Package">package</FONT> <A HREF="../../../../nl.justobjects.pushlet.test.index.html" target="packageFrame">nl.justobjects.pushlet.test</A>;
<FONT ID="LN">5 </FONT><A NAME="5"></A>
<FONT ID="LN">6 </FONT><A NAME="6"></A><FONT ID="Import">import</FONT> <A HREF="../../../../nl/justobjects/pushlet/client/PushletClient.java.html">nl.justobjects.pushlet.client.PushletClient</A>;
<FONT ID="LN">7 </FONT><A NAME="7"></A><FONT ID="Import">import</FONT> <A HREF="../../../../nl/justobjects/pushlet/client/PushletClientListener.java.html">nl.justobjects.pushlet.client.PushletClientListener</A>;
<FONT ID="LN">8 </FONT><A NAME="8"></A><FONT ID="Import">import</FONT> <A HREF="../../../../nl/justobjects/pushlet/core/Event.java.html">nl.justobjects.pushlet.core.Event</A>;
<FONT ID="LN">9 </FONT><A NAME="9"></A><FONT ID="Import">import</FONT> <A HREF="../../../../nl/justobjects/pushlet/core/Protocol.java.html">nl.justobjects.pushlet.core.Protocol</A>;
<FONT ID="LN">10</FONT><A NAME="10"></A><FONT ID="Import">import</FONT> <A HREF="../../../../nl/justobjects/pushlet/util/PushletException.java.html">nl.justobjects.pushlet.util.PushletException</A>;
<FONT ID="LN">11</FONT><A NAME="11"></A>
<FONT ID="LN">12</FONT><A NAME="12"></A><FONT ID="Import">import</FONT> java.util.HashMap;
<FONT ID="LN">13</FONT><A NAME="13"></A><FONT ID="Import">import</FONT> java.util.Map;
<FONT ID="LN">14</FONT><A NAME="14"></A>
<FONT ID="LN">15</FONT><A NAME="15"></A><FONT ID="FormalComment">/**
<FONT ID="LN">16</FONT><A NAME="16"></A> * Demonstrates join-listen service.
<FONT ID="LN">17</FONT><A NAME="17"></A> *
<FONT ID="LN">18</FONT><A NAME="18"></A> * The pushlet protocol supports the "join-listen" service
<FONT ID="LN">19</FONT><A NAME="19"></A> * which allows stateless (e.g. RESTful) clients to join/subscribe/listen
<FONT ID="LN">20</FONT><A NAME="20"></A> * using a single HTTP request.
<FONT ID="LN">21</FONT><A NAME="21"></A> *
<FONT ID="LN">22</FONT><A NAME="22"></A> * @version $Id: SimpleListener.java,v 1.3 2005/03/14 14:07:23 justb Exp $
<FONT ID="LN">23</FONT><A NAME="23"></A> * @author Just van den Broecke - Just Objects &amp;copy;
<FONT ID="LN">24</FONT><A NAME="24"></A> **/</FONT>
<FONT ID="LN">25</FONT><A NAME="25"></A><FONT ID="Public">public</FONT> <FONT ID="Class">class</FONT> SimpleListener <FONT ID="Implements">implements</FONT> <A HREF="../../../../nl/justobjects/pushlet/client/PushletClientListener.java.html">PushletClientListener</A>, <A HREF="../../../../nl/justobjects/pushlet/core/Protocol.java.html">Protocol</A> {
<FONT ID="LN">26</FONT><A NAME="26"></A>    <FONT ID="Private">private</FONT> <FONT ID="Static">static</FONT> String SUBJECT = <FONT ID="StringLiteral">"/temperature"</FONT>;
<FONT ID="LN">27</FONT><A NAME="27"></A>    <FONT ID="Private">private</FONT> <FONT ID="Static">static</FONT> <FONT ID="Final">final</FONT> String MODE = MODE_STREAM;
<FONT ID="LN">28</FONT><A NAME="28"></A>
<FONT ID="LN">29</FONT><A NAME="29"></A>    <FONT ID="Public">public</FONT> SimpleListener(String aHost, <FONT ID="Int">int</FONT> aPort) {
<FONT ID="LN">30</FONT><A NAME="30"></A>        <FONT ID="SingleLineComment">// Create and start a Pushlet client; we receive callbacks
<FONT ID="LN">31</FONT><A NAME="31"></A></FONT>        <FONT ID="SingleLineComment">// through onHeartbeat() and onData().
<FONT ID="LN">32</FONT><A NAME="32"></A></FONT>        <FONT ID="Try">try</FONT> {
<FONT ID="LN">33</FONT><A NAME="33"></A>            <A HREF="../../../../nl/justobjects/pushlet/client/PushletClient.java.html">PushletClient</A> pushletClient = <FONT ID="New">new</FONT> <A HREF="../../../../nl/justobjects/pushlet/client/PushletClient.java.html">PushletClient</A>(aHost, aPort);
<FONT ID="LN">34</FONT><A NAME="34"></A>            pushletClient.setDebug(<FONT ID="False">false</FONT>);
<FONT ID="LN">35</FONT><A NAME="35"></A>            pushletClient.join();
<FONT ID="LN">36</FONT><A NAME="36"></A>            pushletClient.listen(<FONT ID="This">this</FONT>, MODE, SUBJECT);
<FONT ID="LN">37</FONT><A NAME="37"></A>            p(<FONT ID="StringLiteral">"pushletClient started"</FONT>);
<FONT ID="LN">38</FONT><A NAME="38"></A>        } <FONT ID="Catch">catch</FONT> (<A HREF="../../../../nl/justobjects/pushlet/util/PushletException.java.html">PushletException</A> pe) {
<FONT ID="LN">39</FONT><A NAME="39"></A>            p(<FONT ID="StringLiteral">"Error in setting up pushlet session pe="</FONT> + pe);
<FONT ID="LN">40</FONT><A NAME="40"></A>        }
<FONT ID="LN">41</FONT><A NAME="41"></A>    }
<FONT ID="LN">42</FONT><A NAME="42"></A>
<FONT ID="LN">43</FONT><A NAME="43"></A>    <FONT ID="FormalComment">/** Error occurred. */</FONT>
<FONT ID="LN">44</FONT><A NAME="44"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> onError(String message) {
<FONT ID="LN">45</FONT><A NAME="45"></A>        p(message);
<FONT ID="LN">46</FONT><A NAME="46"></A>    }
<FONT ID="LN">47</FONT><A NAME="47"></A>
<FONT ID="LN">48</FONT><A NAME="48"></A>    <FONT ID="FormalComment">/** Abort event from server. */</FONT>
<FONT ID="LN">49</FONT><A NAME="49"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> onAbort(<A HREF="../../../../nl/justobjects/pushlet/core/Event.java.html">Event</A> theEvent) {
<FONT ID="LN">50</FONT><A NAME="50"></A>        p(<FONT ID="StringLiteral">"onAbort received: "</FONT> + theEvent);
<FONT ID="LN">51</FONT><A NAME="51"></A>    }
<FONT ID="LN">52</FONT><A NAME="52"></A>
<FONT ID="LN">53</FONT><A NAME="53"></A>    <FONT ID="FormalComment">/** Data event from server. */</FONT>
<FONT ID="LN">54</FONT><A NAME="54"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> onData(<A HREF="../../../../nl/justobjects/pushlet/core/Event.java.html">Event</A> theEvent) {
<FONT ID="LN">55</FONT><A NAME="55"></A>        <FONT ID="SingleLineComment">// Calculate round trip delay
<FONT ID="LN">56</FONT><A NAME="56"></A></FONT>        System.out.println(theEvent.toXML());
<FONT ID="LN">57</FONT><A NAME="57"></A>    }
<FONT ID="LN">58</FONT><A NAME="58"></A>
<FONT ID="LN">59</FONT><A NAME="59"></A>    <FONT ID="FormalComment">/** Heartbeat event from server. */</FONT>
<FONT ID="LN">60</FONT><A NAME="60"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> onHeartbeat(<A HREF="../../../../nl/justobjects/pushlet/core/Event.java.html">Event</A> theEvent) {
<FONT ID="LN">61</FONT><A NAME="61"></A>        p(<FONT ID="StringLiteral">"onHeartbeat received: "</FONT> + theEvent);
<FONT ID="LN">62</FONT><A NAME="62"></A>    }
<FONT ID="LN">63</FONT><A NAME="63"></A>
<FONT ID="LN">64</FONT><A NAME="64"></A>    <FONT ID="FormalComment">/** Generic print. */</FONT>
<FONT ID="LN">65</FONT><A NAME="65"></A>    <FONT ID="Public">public</FONT> <FONT ID="Void">void</FONT> p(String s) {
<FONT ID="LN">66</FONT><A NAME="66"></A>        System.out.println(<FONT ID="StringLiteral">"[SimpleListener] "</FONT> + s);
<FONT ID="LN">67</FONT><A NAME="67"></A>    }
<FONT ID="LN">68</FONT><A NAME="68"></A>
<FONT ID="LN">69</FONT><A NAME="69"></A>    <FONT ID="FormalComment">/** Main program. */</FONT>
<FONT ID="LN">70</FONT><A NAME="70"></A>    <FONT ID="Public">public</FONT> <FONT ID="Static">static</FONT> <FONT ID="Void">void</FONT> main(String args[]) {
<FONT ID="LN">71</FONT><A NAME="71"></A>        <FONT ID="If">if</FONT> (args.length == <FONT ID="IntegerLiteral">0</FONT>) {
<FONT ID="LN">72</FONT><A NAME="72"></A>            <FONT ID="New">new</FONT> <A HREF="../../../../nl/justobjects/pushlet/test/SimpleListener.java.html">SimpleListener</A>(<FONT ID="StringLiteral">"localhost"</FONT>, <FONT ID="IntegerLiteral">8080</FONT>);
<FONT ID="LN">73</FONT><A NAME="73"></A>        }
<FONT ID="LN">74</FONT><A NAME="74"></A>        <FONT ID="Else">else</FONT> <FONT ID="If">if</FONT> (args.length == <FONT ID="IntegerLiteral">1</FONT>) {
<FONT ID="LN">75</FONT><A NAME="75"></A>            SUBJECT = args[<FONT ID="IntegerLiteral">0</FONT>];
<FONT ID="LN">76</FONT><A NAME="76"></A>            <FONT ID="New">new</FONT> <A HREF="../../../../nl/justobjects/pushlet/test/SimpleListener.java.html">SimpleListener</A>(<FONT ID="StringLiteral">"localhost"</FONT>, <FONT ID="IntegerLiteral">8080</FONT>);
<FONT ID="LN">77</FONT><A NAME="77"></A>        } <FONT ID="Else">else</FONT> {
<FONT ID="LN">78</FONT><A NAME="78"></A>            SUBJECT = args[<FONT ID="IntegerLiteral">0</FONT>];
<FONT ID="LN">79</FONT><A NAME="79"></A>            <FONT ID="SingleLineComment">// args[1] and [2] should be host and port
<FONT ID="LN">80</FONT><A NAME="80"></A></FONT>            <FONT ID="New">new</FONT> <A HREF="../../../../nl/justobjects/pushlet/test/SimpleListener.java.html">SimpleListener</A>(args[<FONT ID="IntegerLiteral">1</FONT>], Integer.parseInt(args[<FONT ID="IntegerLiteral">2</FONT>]));
<FONT ID="LN">81</FONT><A NAME="81"></A>        }
<FONT ID="LN">82</FONT><A NAME="82"></A>    }
<FONT ID="LN">83</FONT><A NAME="83"></A>}
<FONT ID="LN">84</FONT><A NAME="84"></A>
<FONT ID="LN">85</FONT><A NAME="85"></A>
<FONT ID="LN">86</FONT><A NAME="86"></A><FONT ID="MultiLineComment">/*
<FONT ID="LN">87</FONT><A NAME="87"></A> * $Log: SimpleListener.java,v $
<FONT ID="LN">88</FONT><A NAME="88"></A> * Revision 1.3  2005/03/14 14:07:23  justb
<FONT ID="LN">89</FONT><A NAME="89"></A> * addded subject arg
<FONT ID="LN">90</FONT><A NAME="90"></A> *
<FONT ID="LN">91</FONT><A NAME="91"></A> * Revision 1.2  2005/02/28 21:21:32  justb
<FONT ID="LN">92</FONT><A NAME="92"></A> * no chg
<FONT ID="LN">93</FONT><A NAME="93"></A> *
<FONT ID="LN">94</FONT><A NAME="94"></A> * Revision 1.1  2005/02/28 15:58:05  justb
<FONT ID="LN">95</FONT><A NAME="95"></A> * added SimpleListener example
<FONT ID="LN">96</FONT><A NAME="96"></A> *
<FONT ID="LN">97</FONT><A NAME="97"></A> *
<FONT ID="LN">98</FONT><A NAME="98"></A> */</FONT>
<FONT ID="LN">99</FONT><A NAME="99"></A></pre><TABLE id="Header" border="0" cellpadding="0" cellspacing="0" width="100%">
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<font size="4">SimpleListener.java</font>
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